11661116652 has 36 divisors (see below), whose sum is σ = 29880508840. Its totient is φ = 3833790912.

The previous prime is 11661116647. The next prime is 11661116681. The reversal of 11661116652 is 25661116611.

11661116652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2216002 + ... + 2221257.

Almost surely, 2^11661116652 is an apocalyptic number.

11661116652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11661116652 is an abundant number, since it is smaller than the sum of its proper divisors (18219392188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11661116652 is a wasteful number, since it uses less digits than its factorization.

11661116652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4437342 (or 4437337 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The spelling of 11661116652 in words is "eleven billion, six hundred sixty-one million, one hundred sixteen thousand, six hundred fifty-two".